How To Rebuild Brake Calipers

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How To Rebuild Brake Calipers (example shown on an E36 BMW M3)

15. Using a 16mm socket, remove two caliper bracket bolts and remove the caliper bracket.

How To Rebuild Brake Calipers (example shown on an E36 BMW M3)
16. Spray the rotor set screw with a penetrating lubricant like PB Blaster.  This is by far the best penetrating lubricant I have ever used.  Let it sit for 10-20 minutes and do all 4 at the same time.  You will save yourself a huge headache by preventing yourself from being impatient and rounding off the set screw and not being able to remove the rotor.

How To Rebuild Brake Calipers (example shown on an E36 BMW M3)
17. Using a 6mm Allen head, remove the set screw.  Be sure the Allen wrench seats fully into the set screw and push into the set screw when loosening it or it will strip. Do not use an air impact gun or the screw may break.

How To Rebuild Brake Calipers (example shown on an E36 BMW M3)
18. Now that the caliper bracket is out of the way and the set screw is removed.  Use a rubber mallet and hit the back side of the rotor face carefully.  Spin the rotor around as you gently tap the back side of the rotor face.  If you are raplacing and not resurfacing the rotor, it isn’t as important but you still do not want to damage the wheel bearing.

How To Rebuild Brake Calipers (example shown on an E36 BMW M3)

19. Clean the face of the hub with scotchbright and remove all of the rust.  Put a light coat of Caliper Grease or Anti-seize on the mounting face.


20. Clean the rotor face with Brake Clean to remove any leftover cosmoline.

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